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Add more SM4 modes

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This commit is contained in:
Zhi Guan
2024-02-19 14:16:49 +08:00
parent 8ae03e8105
commit c9c26aca44
12 changed files with 1092 additions and 61 deletions
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101
include/gmssl/sm4.h
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@@ -119,6 +119,107 @@ int sm4_ctr_encrypt_finish(SM4_CTR_CTX *ctx, uint8_t *out, size_t *outlen);
#define sm4_ctr_decrypt_finish(ctx,out,outlen) sm4_ctr_encrypt_finish(ctx,out,outlen)
#ifdef ENABLE_SM4_ECB
// call `sm4_set_decrypt_key` before decrypt
void sm4_ecb_encrypt(const SM4_KEY *key, const uint8_t *in, size_t nblocks, uint8_t *out);
typedef struct {
SM4_KEY sm4_key;
uint8_t block[SM4_BLOCK_SIZE];
size_t block_nbytes;
} SM4_ECB_CTX;
int sm4_ecb_encrypt_init(SM4_ECB_CTX *ctx, const uint8_t key[SM4_BLOCK_SIZE]);
int sm4_ecb_encrypt_update(SM4_ECB_CTX *ctx,
const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
int sm4_ecb_encrypt_finish(SM4_ECB_CTX *ctx, uint8_t *out, size_t *outlen);
int sm4_ecb_decrypt_init(SM4_ECB_CTX *ctx, const uint8_t key[SM4_BLOCK_SIZE]);
int sm4_ecb_decrypt_update(SM4_ECB_CTX *ctx,
const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
int sm4_ecb_decrypt_finish(SM4_ECB_CTX *ctx, uint8_t *out, size_t *outlen);
#endif
#ifdef ENABLE_SM4_OFB
// always call `sm4_set_encrypt_key` before encrypt/decrypt
// `sm4_ofb_encrypt` will change the param `iv`
void sm4_ofb_encrypt(const SM4_KEY *key, uint8_t iv[16], const uint8_t *in, size_t inlen, uint8_t *out);
typedef struct {
SM4_KEY sm4_key;
uint8_t iv[SM4_BLOCK_SIZE];
uint8_t block[SM4_BLOCK_SIZE];
size_t block_nbytes;
} SM4_OFB_CTX;
int sm4_ofb_encrypt_init(SM4_OFB_CTX *ctx,
const uint8_t key[SM4_BLOCK_SIZE], const uint8_t iv[SM4_BLOCK_SIZE]);
int sm4_ofb_encrypt_update(SM4_OFB_CTX *ctx,
const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
int sm4_ofb_encrypt_finish(SM4_OFB_CTX *ctx, uint8_t *out, size_t *outlen);
#endif
#ifdef ENABLE_SM4_CFB
#define SM4_CFB_MIN_SBYTES 1
#define SM4_CFB_MAX_SBYTES 16
// always call `sm4_set_encrypt_key` before encrypt/decrypt
// `sm4_cfb_encrypt/decrypt` will change the param `iv`
void sm4_cfb_encrypt(const SM4_KEY *key, size_t sbytes, uint8_t iv[16],
const uint8_t *in, size_t inlen, uint8_t *out);
void sm4_cfb_decrypt(const SM4_KEY *key, size_t sbytes, uint8_t iv[16],
const uint8_t *in, size_t inlen, uint8_t *out);
typedef struct {
SM4_KEY sm4_key;
uint8_t iv[SM4_BLOCK_SIZE];
uint8_t block[SM4_BLOCK_SIZE];
size_t block_nbytes;
size_t sbytes;
} SM4_CFB_CTX;
int sm4_cfb_encrypt_init(SM4_CFB_CTX *ctx, size_t sbytes,
const uint8_t key[SM4_BLOCK_SIZE], const uint8_t iv[SM4_BLOCK_SIZE]);
int sm4_cfb_encrypt_update(SM4_CFB_CTX *ctx,
const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
int sm4_cfb_encrypt_finish(SM4_CFB_CTX *ctx, uint8_t *out, size_t *outlen);
int sm4_cfb_decrypt_init(SM4_CFB_CTX *ctx, size_t sbytes,
const uint8_t key[SM4_BLOCK_SIZE], const uint8_t iv[SM4_BLOCK_SIZE]);
int sm4_cfb_decrypt_update(SM4_CFB_CTX *ctx,
const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
int sm4_cfb_decrypt_finish(SM4_CFB_CTX *ctx, uint8_t *out, size_t *outlen);
#endif
#ifdef ENABLE_SM4_CCM
#define SM4_CCM_MIN_IV_SIZE 7
#define SM4_CCM_MAX_IV_SIZE 13
#define SM4_CCM_MIN_MAC_SIZE 4
#define SM4_CCM_MAX_MAC_SIZE 16
// make sure inlen < 2^((15 - ivlen) * 8)
int sm4_ccm_encrypt(const SM4_KEY *sm4_key, const uint8_t *iv, size_t ivlen,
const uint8_t *aad, size_t aadlen, const uint8_t *in, size_t inlen,
uint8_t *out, size_t taglen, uint8_t *tag);
int sm4_ccm_decrypt(const SM4_KEY *sm4_key, const uint8_t *iv, size_t ivlen,
const uint8_t *aad, size_t aadlen, const uint8_t *in, size_t inlen,
const uint8_t *tag, size_t taglen, uint8_t *out);
#endif
#ifdef ENABLE_SM4_XTS
// call `sm4_set_encrypt_key` to set both `key1` and `key2`
int sm4_xts_encrypt(const SM4_KEY *key1, const SM4_KEY *key2, size_t tweak,
const uint8_t *in, size_t inlen, uint8_t *out);
// call `sm4_set_decrypt_key(key1)` and `sm4_set_encrypt_key(key2)`
int sm4_xts_decrypt(const SM4_KEY *key1, const SM4_KEY *key2, size_t tweak,
const uint8_t *in, size_t inlen, uint8_t *out);
#endif
#ifdef __cplusplus
}
#endif